Duralumin

Duralumin is an alloy made up of 90% aluminum, 4% copper, 0.5–1% magnesium, and less than 1% manganese.
It is an extremely hard alloy that is used, for example, in vehicle armour in the defense industry.duralumin is a metal which is very light and made up of 96% aluminium and 4% copper.🏒